Underwater detection device

Abstract

An underwater detection device is provided, which includes an echo signal processing module configured to acquire echo signals and detect signal levels of the echo signals corresponding to water depths, the echo signals being reflection waves caused by ultrasonic waves transmitted underwater, a detection image display controlling module configured to display on a display unit a detection image indicating the signal levels of the echo signals corresponding to the water depths and placed in a chronological order, and a menu display controlling module configured to display first superordinate menu buttons on the detection image displayed on the display unit, one of the first superordinate menu buttons displayed in one of end sections of the detection image where oldest information is displayed, the rest of the first superordinate menu buttons displayed to extend from the one of the first superordinate menu buttons in one of depth directions and time axis directions.

What is claimed is: 
     
         1 . An information display device, comprising:
 processing circuitry configured to:
 display first superordinate menu buttons on a display unit, 
 display a switch button, 
 in response to a selection of the switch button, switch between displaying the first superordinate menu buttons and displaying a shortcut button, 
 in response to receiving a command to display the shortcut button via the switch button, remove the first superordinate menu buttons and display a first menu button selected from one or more subordinate menu buttons associated with the first superordinate menu buttons, the first menu button being registered as the shortcut button, and in response to receiving a selection of the shortcut button, display subordinate menu buttons corresponding to the shortcut button. 
   
     
     
         2 . The information display device of  claim 1 , wherein the processing circuitry is further configured to display the switch button adjacent to the first superordinate menu buttons in an extending direction of the first superordinate menu buttons. 
     
     
         3 . The information display device of  claim 1 , wherein when one of the first superordinate menu buttons is selected, the processing circuitry is further configured to display subordinate menu buttons corresponding to one or more subordinate menus, respectively. 
     
     
         4 . The information display device of  claim 3 , wherein the processing circuitry is further configured to display the subordinate menu buttons to extend adjacent to the selected first superordinate menu button, in a direction perpendicular to the extending direction of the first superordinate menu buttons. 
     
     
         5 . The information display device of  claim 3 , wherein when one of the subordinate menu buttons is selected, the processing circuitry is further configured to display the first superordinate menu buttons to be translucent so that a detection image is seen through the first superordinate menu buttons. 
     
     
         6 . The information display device of  claim 1 , wherein when displaying the shortcut button, the processing circuitry is further configured to display a second menu button corresponding to the shortcut button and an image indicating that the shortcut button is a shortcut, the second menu button corresponding to the shortcut button being one of the first superordinate menu buttons and the subordinate menu buttons. 
     
     
         7 . The information display device of  claim 1 , wherein shortcut button is a first shortcut button, and the processing circuitry is further configured to move a pointer based on an operation performed on a user interface and, when one of the first superordinate menu buttons or the subordinate menu buttons is dragged and dropped via the pointer, register the one of the first superordinate menu buttons or the subordinate menu buttons as a second shortcut button. 
     
     
         8 . The information display device of  claim 1 , wherein the processing circuitry is further configured to display each of the menu buttons as a rectangular icon. 
     
     
         9 . The information display device of  claim 1 , wherein the processing circuitry is further configured to display an image generated by a radar apparatus. 
     
     
         10 . The information display device of  claim 1 , wherein the processing circuitry is further configured to display an image generated by a navigation system.